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AH-X075E/X095E
AU-X075E/X095E
AY-X07S5E/X095E
AE-X075E/X095E
AU-X075E/X095E are not provided with the heating function.
2. OUTDOOR UNIT
2-1 Defrost operation
(1) Overview
Defrosting begins during heating if the conditions for compressor operation time and outdoor heat exchanger
temperature are met.
When defrosting begins, the indoor and outdoor fans stop.
Defrosting stops when the temperature of the outdoor heat exchanger goes above approximately 10°C or defrosting
time exceeds 13 minutes.
Defrost
Defrost
Defrost
mask time
'
i mask time
|
| mask time
|
Heating
begins
|
|
|
|
Defrosting
Defrosting
os
Max. 13 min.
Max. 13 min.
(2) Detrosting conditions
The temperature of the outdoor heat exchanger is detected by a sensor, and if it stays in the preset defrost zone for
approximately 2 minutes, defrosting start is enabled.
If defrosting is enabled when the defrost mask time ends, defrosting is performed. If defrosting is not enabled, the
machine waits until defrosting is enabled.
Defrost mask times and defrost zones are as shown below.
defrosting time
mask time
Ei
a en
Second time
and thereafter
—
The defrosting zone is an outdoor heat exchanger
temperature of under approximately -4°C.
3.01050 min._| 40min.
5.0t07.0min. [| 80min. _|
7.0%09.0 min. | 25min. |
Over 9.0 min.
(3) During defrosting
When defrosting begins, the compressor stops. Approximately 3 minutes later, the compressor reactivates in the
refrigeration cycle, and the outdoor heat exchanger is defrosted.
Each mode is as follows:
The outdoor fan is stopped
The operating frequency is as shown in the table below
The indoor fan is stopped
AE-XO95E,
AU-X095E
| 95Hz |
AE-X075E,
AU-X075E
Defrost stop
When defrosting time exceeds 13 minutes
When the temperature of the outdoor heat exchanger rises above approximately 10°C
Defrost stop is determined by either of the above conditions, and the compressor is stopped.
At the same time, the outdoor fan go ON. The compressor is reactivated in the heating cycle 3 minutes attr it was
Stopped, and normal control resumes.
—
(4
—
25
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